Attachment and accessory scraper blades for detail sander

Abstract

A detail sander having a scraper blade of a shape that allows for different geometric configurations to be oriented into the working position to contact a work surface. Blades may also be adjusted forward or rearward relative to the leg of the sander to allow for changes in the stroke of the sweeping motion produced by the sander. A teardrop shaped blade and a triangular shaped blade having varying geometries about their respective peripheries allow for varying tip geometries to be oriented into the working position of the blade. Additionally, the blades are removable so that different blades may be attached to suit different needs.

What is claimed: 
     
       1. A scraper blade attachment for use with a detail sander having a housing, a drive motor and an output member driven relative to the housing in an oscillatory manner about a drive axis oriented normal to a workpiece to be scraped, said scraper blade attachment comprising: a leg member having an attachment end adapted to be affixed to a detail sander output member and a free end spaced from the attachment end; and   a generally planar rigid scraper blade having a top surface adapted to be attached to the leg member free end, a peripheral edge and a bottom surface, said peripheral edge and bottom surface collectively defining a corner edge for scraping a surface of a workpiece,   wherein the scraper blade is provided with an outer region adjacent the peripheral edge which is bent downwardly toward the workpiece forming an angle relative to an inner-region of the blade causing contact between the scraper blade and the planar workpiece to be confined to an area adjacent said corner edge.   
     
     
       2. The scraper blade attachment of claim 1 wherein the scraper blade inner-region is planar and the outer region is inclined 10° to 15° relative to the inner region. 
     
     
       3. The scraper blade attachment of claim 2 wherein the scraper blade peripheral edge is normal to the plane of the scraper blade inner region. 
     
     
       4. The scraper blade attachment of claim 1 wherein the scraper blade is removably attachable to the leg free end at a plurality of orientations. 
     
     
       5. The scraper blade attachment of claim 4 wherein the scraper blade is generally tear drop shaped having a pointed tip region. 
     
     
       6. The scraper blade attachment of claim 5 wherein the scraper blade has two separate locations which are selectively affixable to the leg with the blade tip alternatively located at two different distances from the detail sander drive axis enabling the speed of the scraper blade tip movement to be varied. 
     
     
       7. A scraper blade apparatus comprising: a housing;   a drive motor oriented within the housing;   an output member driven by the drive motor relative to the housing in an oscillatory manner about a drive axis oriented normal to a workpiece to be scraped; and   a scraper blade attachment including a leg member and a generally planar scraper blade, said leg member having an attachment end adapted to be affixed to the detail sander output member and a free end spaced apart from the attachment end, said free end being generally planar perpendicular to the drive axis and parallel to a workpiece to be scraped, said free end having a central aperture for receiving a fastener and a plurality of circumferentially spaced apart alignment holes formed therein, said generally planar scraper blade having a hole formed therethrough for receiving a fastener, a top surface having an upstanding boss projecting therefrom adapted to cooperate with one of the holes formed in the leg member free end so that the scraper blade may be mounted to the leg member at a plurality of orientations relative to the leg member, said scraper blade further having a peripheral edge and a bottom surface, said peripheral edge and bottom surface further defining a sharp corner edge for scraping the surface of a workpiece.   
     
     
       8. The scraper blade apparatus of claim 7, wherein the scraper blade is provided with a pointed tip region. 
     
     
       9. The scraper blade apparatus of claim 8 wherein the scraper blade has two separate attaching locations which are affixable to the leg with the blade tip located at two different locations from the detail sander drive axis enabling the speed of oscillation of the scraper blade tip to be varied.